i shoot in raw, mainly just to learn more about post-processing. lets me go back to my raw files and try something different to see what works. could always batch process to jpg without any changes i guess

if i'm shooting "snapshots" and get something good I can pull the raw, otherwise I can format card 1 and dump card 2 and go off web-ready JPG with no resize or sharpening just like a point and shoot.

usually I dump both so I work the raws and use the jpgs as references to in-camera processing. It is possible to make an image in raw that at first looks good but then you realize the JPG looks better so you have to change a couple more things in raw. Not often though

Raw + jpeg allows the best of both worlds. It's nice to have the raw file when you want total control of an image. Real World Camera Raw by Bruce Fraser is a must have if you want to learn the advantages of raw.